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The before picture, which shows a young, fit Brolin with his hair up in a mohawk and the sides shaved down to his skull.

The photo on the right shows a completely different Brolin, wearing a denim jacket, trucker hat and handlebar mustache.

10 years ago: Earlier in the day the actor showed a photo of himself from 10 years ago as a reminder of what he looked like at 167 pounds

Earlier in the day, the accomplished actor posted a similar photo that he confirmed showed him at 167 pounds.

He also wrote 2007, which appears to be when the photo was taken, along with the hashtag #AFilmByOliverStone.

During his appearance on The Tonight Show last January, the actor explains he was required to gain some weight and grow out a mustache to play his yet-to-be-revealed part in the upcoming comedy, which is due out on Christmas Day 2017.

Prepping for a role: The 48-year-old explained he was required to gain some weight and grow out a mustache to play a part in the upcoming comedy, Legacy of a Whitetail Deer Hunter

Brolin had a big year in 2016. In addition to gaining weight and starring in a new film, the actor wed Kathryn Boyd, his assistant-turned-fiance, in September.

Before Boyd, the Sicario actor was wed to Diane Lane, 51, from 2004 until 2013.

In September Brolin told The Guardian he was on a bad path after divorcing Lane

New beginnings: The actor wed Kathryn Boyd, his assistant-turned-fiance, in September

'It made me think of a lot of things,' he began.

'My mom dying when I was in my 20s. All the impact that had on me that I hadn’t moved past; I was always such a momma’s boy.

'But I realized that I was on a destructive path. I knew that I had to change and mature. It was like I stepped back and saw the hamster wheel.'

Classy lady: Brolin was married to Diane Lane from 2014 before they divorced in 2013